National Weather Service Forecast for: Shelby MT
Issued by: National Weather Service Great Falls, MT
Updated: 3:43 am MDT Jun 22, 2026
 
Overnight

Overnight: A 20 percent chance of showers. Mostly cloudy, with a low around 45. Northwest wind around 7 mph.
Slight Chance
Showers
 Monday

Monday: A 30 percent chance of showers, mainly between 1pm and 3pm. Mostly cloudy, with a high near 62. Northwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.
Chance
Showers
 Monday
Night
Monday Night: Mostly clear, with a low around 39. West northwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 26 mph.
Mostly Clear
 Tuesday

Tuesday: Sunny, with a high near 70. West northwest wind 5 to 8 mph becoming north northeast in the afternoon.
Sunny
 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 46. East wind 3 to 8 mph.
Mostly Cloudy
 Wednesday

Wednesday: Mostly sunny, with a high near 75. Calm wind becoming east southeast 5 to 9 mph in the morning.
Mostly Sunny
 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 50. East southeast wind 6 to 10 mph, with gusts as high as 18 mph.
Partly Cloudy
 Thursday

Thursday: Partly sunny, with a high near 80. Light east wind becoming southeast 5 to 10 mph in the morning.
Partly Sunny
 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 53.
Mostly Cloudy
Lo 45 °F Hi 62 °F Lo 39 °F Hi 70 °F Lo 46 °F Hi 75 °F Lo 50 °F Hi 80 °F Lo 53 °F

 

Overnight
 
 A 20 percent chance of showers. Mostly cloudy, with a low around 45. Northwest wind around 7 mph.
Monday
 
 A 30 percent chance of showers, mainly between 1pm and 3pm. Mostly cloudy, with a high near 62. Northwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.
Monday Night
 
 Mostly clear, with a low around 39. West northwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 26 mph.
Tuesday
 
 Sunny, with a high near 70. West northwest wind 5 to 8 mph becoming north northeast in the afternoon.
Tuesday Night
 
 Mostly cloudy, with a low around 46. East wind 3 to 8 mph.
Wednesday
 
 Mostly sunny, with a high near 75. Calm wind becoming east southeast 5 to 9 mph in the morning.
Wednesday Night
 
 Partly cloudy, with a low around 50. East southeast wind 6 to 10 mph, with gusts as high as 18 mph.
Thursday
 
 Partly sunny, with a high near 80. Light east wind becoming southeast 5 to 10 mph in the morning.
Thursday Night
 
 Mostly cloudy, with a low around 53.
Friday
 
 A chance of showers after noon. Partly sunny, with a high near 80.
Friday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
Saturday
 
 A chance of showers. Partly sunny, with a high near 70.
Saturday Night
 
 A chance of showers. Mostly cloudy, with a low around 47. Breezy.
Sunday
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 62. Breezy.

 

Forecast from NOAA-NWS for Shelby MT.